Just thought I'd share a little learning aid I've been using. Keep in mind this is on my iPad, not sure if it's available on android. Synthesia is an app for helping people learn the piano, you can download midi files and get synthesia to play through them on both a piano roll and the notation. Or you can let it play through without sounding. It comes with an onscreen keyboard so you can hit the notes as they roll under the keys. You can choose the speed.I've been downloading midi files from the session and getting synthesia to play through it slowly while I follow it. It's really been helping me, hope it does others if they need it